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<br />9 <br /> <br />GLEN CANYON DAM ADAPTIVE MANAGEMENT PROGRAM <br /> <br />Project 04 <br /> <br />I. Title: Feasibility of Devcloping a Program to Augment the Population of <br />Humpback Chub (Gila cypha) in Grand Canyon <br /> <br />II. Relationship To Programs: This section provides insight into the relationship between <br />the proposed action and the Adaptive Management Program goals and objectives, and the <br />Biological Opinion RPAs on Glen Canyon Dam operations. <br /> <br />Adaptive Management Program: The goals and management objectives of the Adaptive <br />Management Program that apply are: <br /> <br />Goal 2. Maintain or attain viable populations of existing native fish, remove jeopardy for <br />humpback chub and razorback sucker, and prevent adverse modification to their critical habitat. <br /> <br />Management Objective 2.1: Maintain or attain humpback chub abundance and year-class <br />strength in the LCR and other aggregations at appropriate levels for viable populations and to <br />remove jeopardy. (Sequence order I, 1.5 and 2) <br /> <br />Management Objective 2.2: Sustain or establish viable HBC spawning aggregations outside the <br />LCR in the Colorado River ecosystem below Glen Canyon Dam to remove jeopardy. (Sequence <br />order 2,2.5, and 3) <br /> <br />Biological Opinion: Elements of the Reasonable and Prudent Alternative that apply are <br />as follows. Successful completion of the RPA is necessalY to remove jeopardy to the humpback <br />chub from the proposed action (operation of Glen Canyon Dam under a Modified Low <br />Fluctuating Flow alternative described in the Final EIS and ROD). <br /> <br />Element 2: Establish a second spawning aggregation of humpback chub downstream of Glen <br />Canyon Dam. <br /> <br />III. Study Backgronnd/Rationale and Hypotheses: <br />There has been concern among biologists and managers regarding the continued downward trend <br />in HBC populations within Grand Canyon. In response to this concern, in the fall of 2002, <br />GCMRC asked the Arizona Fishery Resources Office in Flagstaff to prepare a feasibility study <br />on augmentation of HBC in Grand Canyon. <br /> <br />IV. Study Goals, Objcctives, End Product: <br /> <br />Studv Goal <br />Provide a comprehensive overview of the literature and background associated with hatchery <br />augmentation and captive propagation. <br /> <br />Studv Obiectives (Performance Measures) <br /> <br />Created on 5/6/2003 5:41 PM <br />